| 摘要 |
The invention provides a heating apparatus 505 for an internal combustion engine 110 equipped with an engine oil circuit 525 which has an engine oil heat exchanger 520. The engine has an Exhaust Gas Recirculation (EGR) system (300 fig 6; 620 fig 6), a main pump 590 for circulating an engine coolant in a main coolant circuit 517, and an auxiliary pump 500 for circulating the coolant in an auxiliary coolant circuit 515. The auxiliary coolant circuit includes at least one EGR cooler 310, 510 of the EGR system, and the engine oil heat exchanger is arranged downstream of the EGR cooler. The main pump and the auxiliary pump are electrically connected to an Electronic Control Unit (ECU) 450 which can monitor an engine oil temperature in the engine oil circuit. The ECU can also energize the auxiliary pump if the monitored engine oil temperature value is lower than a predetermined threshold value. |
